Chemical Bank, the main bank subsidiaryof Chemical New York Corp, and Marine Midland Banks Inc said
they were raising the prime lending rate to 7-3/4 pct from
7-1/2 pct, effective immediately.
    In St Louis, Mercantile Bancorp said its Mercantile Bank
N.A. was also raising its prime rate to 7-3/4 pct from 7-1/2
pct, effective immediately.
    The changes follow similar cuts yesterday by Citicorp and
Chase Manhattan.
 Reuter
